If you wish to add a new Viewer on the server:
1) Log into Innovator as an administrative user
2) From the TOC select Administration\
Viewers
3) From the main toolbar select New Item
4) In the Viewer form, fill in the following values
a. Name = Name of the viewer
b. Description = Description of the viewer
c. Viewer URL = URL to the viewer. Any viewers shuld be installed under the \Innovator\Client\scripts\viewers folder, and the URL can be called from there as something like viewers/Aras.html
5) Save, Unlock, and Close
To then associate the new viewer with the file type:
1) Log into Innovator as an administrative user
2) From the TOC select Administration\
File Type
3) Edit the File Type
4) Select the View With relationship tab
5) From the relationship toolbar, select New Relationship
a. Search for and select the new viewer.
b. Select green checkmark "Return Selected" button from the search dialog toolbar.
6) Save, Unlock, and Close
Hope this helps!
-Bill